Spin transfer effects in current perpendicular to the plane spin valves

被引：11

作者：

Covington, M ^{[1
]}

AlHajDarwish, M ^{[1
]}

Ding, Y ^{[1
]}

Rebei, A ^{[1
]}

Parker, GJ ^{[1
]}

Gokemeijer, N ^{[1
]}

Seigler, MA ^{[1
]}

机构：

[1] Seagate Res, Pittsburgh, PA 15222 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 287卷

关键词：

spin momentum transfer; giant magnetoresistance; current perpendicular to the plane; spin valve; magnetization dynamics;

D O I：

10.1016/j.jmmm.2004.10.053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present experimental and numerical micromagnetic data that illustrate manifestations of spin momentum transfer in current perpendicular to the plane spin valves. Noise measurements confirm predictions of current induced magnetization dynamics due to spin torque, where the dynamics are observable only for those combinations of current direction and magnetic configuration in which spin transfer acts to reorient the free layer magnetization away from the direction set by the net magnetic field. The evolution of the amplitude and spectral characteristics of the noise with varying current and magnetic configuration are also discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：325 / 332

页数：8

共 23 条

[1] Modification of the Landau-Lifshitz equation in the presence of a spin-polarized current in colossal- and giant-magnetoresistive materials [J].